View In:   ArcGIS Online Map Viewer

Name: Baseflow

Display Field: SITE_NM

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Automated hydrograph separation techniques were used to evaluate the groundwater contribution to total streamflow (baseflow) at active and inactive stream gauging stations throughout Washington State. Discharge records for 582 gauging stations, with at least three complete water years of daily mean streamflow data, were downloaded from the U.S. Geological Survey (USGS) National Water Information System. Station characteristics were compiled for each gauge, including period of streamflow record, type and degree of regulation affecting the gauge, watershed drainage area, USGS station number, station name, and gauge location. Summary statistics were calculated for annual mean streamflow and annual 7-day low flow for all 582 stations. Monthly, and in some cases annual, statistics for baseflow were then estimated using a USGS hydrograph separation software program called HYSEP (Sloto and Crouse, 1996) for those stations judged to be free of significant snowmelt or regulation effects.</SPAN></P></DIV></DIV></DIV>

Service Item Id: 16586930c14c44a2a4d007c3d63bb19d

Copyright Text: Washington State Department of Ecology, U.S. Geological Survey (USGS)

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

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Max Scale: 70.52

Supports Advanced Queries: true

Supports Statistics: true

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Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

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Spatial Reference: 2927  (2927)  LatestVCSWkid(0)

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HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field:

Fields:

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• Name: Baseflow
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Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata